[PATCH] kernel/printk: do not turn off bootconsole in printk_late_init if keep_bootcon

From: Nishanth Aravamudan
Date: Tue Aug 09 2011 - 20:02:41 EST

It seems that commit 7bf693951a8e5f7e600a45b74d91d962a453146e doesn't
always achieve what it aims, as printk_late_init() runs it
unconditionally turns off all boot consoles. With this patch, I am able
to see more messages on the boot console in KVM guests than I can
without, when keep_bootcon is specified.

Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Cc: Greg KH <gregkh@xxxxxxx>
kernel/printk.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/printk.c b/kernel/printk.c
index 37dff34..293a6cc 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -1602,7 +1602,7 @@ static int __init printk_late_init(void)
struct console *con;

for_each_console(con) {
- if (con->flags & CON_BOOT) {
+ if (!keep_bootcon && con->flags & CON_BOOT) {
printk(KERN_INFO "turn off boot console %s%d\n",
con->name, con->index);

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